JPS5710443A - Detector for dew point meter - Google Patents

Detector for dew point meter

Info

Publication number
JPS5710443A
JPS5710443A JP8390380A JP8390380A JPS5710443A JP S5710443 A JPS5710443 A JP S5710443A JP 8390380 A JP8390380 A JP 8390380A JP 8390380 A JP8390380 A JP 8390380A JP S5710443 A JPS5710443 A JP S5710443A
Authority
JP
Japan
Prior art keywords
dew point
resistance
temperature
resistance element
conductance
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP8390380A
Other languages
Japanese (ja)
Other versions
JPS6128296B2 (en
Inventor
Fumiya Furuno
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Yokogawa Electric Corp
Original Assignee
Hokushin Electric Works Ltd
Yokogawa Hokushin Electric Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hokushin Electric Works Ltd, Yokogawa Hokushin Electric Corp filed Critical Hokushin Electric Works Ltd
Priority to JP8390380A priority Critical patent/JPS5710443A/en
Publication of JPS5710443A publication Critical patent/JPS5710443A/en
Publication of JPS6128296B2 publication Critical patent/JPS6128296B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N25/00—Investigating or analyzing materials by the use of thermal means
    • G01N25/56—Investigating or analyzing materials by the use of thermal means by investigating moisture content
    • G01N25/66—Investigating or analyzing materials by the use of thermal means by investigating moisture content by investigating dew-point

Abstract

PURPOSE:To enable the omission of the thermocouple of a dew point meter for simplifying the constition of the dew point meter by taking advantage of a phenomenon that the combined resistance of the surface resistance of a resistance element having a negative temperaure coefficient and a volume resistance simultaneously becomes the maximum at dew point as well as a function of dew point temperature. CONSTITUTION:The surface resistance of a resistance element 13 having a negative temperature coefficient decreases suddenly near a dew point temperature, while the volume resistance thereof increases in accordance with the temperature characteristics of a normal thermistor, therefore, the characteristics of the combined conductance of a surface conductance and a volume cnductance includes the minimum value. When the electrical resistance between a cylindrical electrode 11 and an annular electrode 12 is measured by means of a measuring instrument 15 while the resistance element 13 is cooled by cool air supplied from a cooling air source 14, the combined conductance diminishes gradually and rises suddenly at the moment when the surface 13a of the resistance element 13 is dewed. The minimum value of the combined conductance is employed in obtaining a dew point temperature. Thus the thermocouple and the temperature measuring device can be omitted so that the construction of the dew point meter is simplified.
JP8390380A 1980-06-23 1980-06-23 Detector for dew point meter Granted JPS5710443A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8390380A JPS5710443A (en) 1980-06-23 1980-06-23 Detector for dew point meter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8390380A JPS5710443A (en) 1980-06-23 1980-06-23 Detector for dew point meter

Publications (2)

Publication Number Publication Date
JPS5710443A true JPS5710443A (en) 1982-01-20
JPS6128296B2 JPS6128296B2 (en) 1986-06-30

Family

ID=13815578

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8390380A Granted JPS5710443A (en) 1980-06-23 1980-06-23 Detector for dew point meter

Country Status (1)

Country Link
JP (1) JPS5710443A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5965246A (en) * 1982-08-25 1984-04-13 エンドレス・ウント・ハウザ−・ゲゼルシヤフト・ミツト・ベシユレンクテル・ハフツング・ウント・コンパニ− Measuring device for dew point
CN104849314A (en) * 2015-05-20 2015-08-19 西安热工研究院有限公司 Dustproof system and method for detection probe of acid dew point instrument

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5965246A (en) * 1982-08-25 1984-04-13 エンドレス・ウント・ハウザ−・ゲゼルシヤフト・ミツト・ベシユレンクテル・ハフツング・ウント・コンパニ− Measuring device for dew point
CN104849314A (en) * 2015-05-20 2015-08-19 西安热工研究院有限公司 Dustproof system and method for detection probe of acid dew point instrument

Also Published As

Publication number Publication date
JPS6128296B2 (en) 1986-06-30

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